66431075614675 has 48 divisors (see below), whose sum is σ = 90378198282240. Its totient is φ = 48237042147840.

The previous prime is 66431075614661. The next prime is 66431075614693. The reversal of 66431075614675 is 57641657013466.

It is a de Polignac number, because none of the positive numbers 2^k-66431075614675 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21563107 + ... + 24450556.

It is an arithmetic number, because the mean of its divisors is an integer number (1882879130880).

Almost surely, 2^{66431075614675} is an apocalyptic number.

66431075614675 is a deficient number, since it is larger than the sum of its proper divisors (23947122667565).

66431075614675 is a wasteful number, since it uses less digits than its factorization.

66431075614675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46013812 (or 46013807 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 61.

The spelling of 66431075614675 in words is "sixty-six trillion, four hundred thirty-one billion, seventy-five million, six hundred fourteen thousand, six hundred seventy-five".